Keynote's enhanced Web Performance Indices now include three new measurements, representing the cutting edge in determining how well a consumer experiences content and interacts with a website. With the addition of these metrics, site operators can now view performance beyond just Web server or network responsiveness, and understand details like when a user first sees something other than a blank page, or when a page can be fully clicked, swiped or scrolled.

Hundreds of the world's top companies currently use Keynote's indices every week to benchmark the speed and reliability of their sites on desktops, tablets and smartphones. The indices are used by leading companies to assess their site's performance against internally established goals for performance, and also against leading competitors in their industry. Bill Gassman of IT industry analyst firm Gartner says, "Benchmark your website's speed across different types of devices and networks, for the most important and most common user tasks (mobile and desktop users) before you make any changes so that you can gauge the effect of investments in enhancement tools and techniques" (What Marketers Should Know About Website Speed, March 5, 2013). The enhanced indices raise the bar for companies striving to deliver a better online experience to customers with new precision, unavailable anywhere else.

"The Keynote Performance Indices provide unique transparency into the state of Web performance, at a time when users expect almost instant loading and functionality," says Nick Halsey, chief marketing officer at Keynote. "Customers using the Keynote Transaction Perspective monitoring service have enjoyed these advances in measuring user experience for some time. We're pleased that now everyone looking to benchmark Web performance can benefit from this technology—the same one powering our Performance Indices."

The significance of adding user experience metrics is that site operators can now view performance beyond the perspective of only Web server or network responsiveness. These metrics represent important events in a page's lifecycle and makes the difference between a user seeing something - and nothing. For example, a user visits two sites, each with a Total User Experience Time of five seconds. If site A starts displaying content in half a second but site B does not start rendering any content until four seconds, the perception of site A will be more positive, even though both sites have the same overall five second user experience time.

Keynote is the pioneer in providing indices tracking website performance, having first published the Keynote Business Top 40 Index (KB40) back in 1999. Today Keynote is widely recognized as the industry authority on mobile and Web performance as measured across the three screens of desktops, tablets and smartphones used by consumers today. Keynote customers use the Perspective® family of monitoring products and services for a complete range of Web and mobile performance and management capabilities.

Keynote DeviceAnywhere ® provides the industry's only true cloud-based platform for testing and monitoring the functionality, usability, performance and availability of mobile applications and websites. Its suite of mobile testing solutions is used by over 1,000 mobile developers and enterprises to deliver quality mobile applications and services to the mobile channel.

Keynote SIGOS ® offers active end-to-end Quality of Service (QoS) testing and monitoring solutions for mobile, fixed and VoIP communications. Its SITE and Global Roamer products are used by over 200 network operators, content providers, carriers and regulators in over 100 countries worldwide.

Keynote's 4,000 customers represent top Internet and mobile companies and include American Express, AT&T, Disney, eBay, E*TRADE, Expedia, Google, Microsoft, SonyEricsson, T-Mobile and Vodafone. Keynote Systems, Inc. is headquartered in San Mateo, California and can be reached at http://www.keynote.com/ or by phone in the U.S. at 1-800-KEYNOTE (1-800-539-6683).